# Relationship history for MSHA mine 3607125

Current hierarchy: **William D  Renton; James T  Arnone → Hardhat Mining Inc → Caleb Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Davis T Raymond → Caleb Mine; 1974-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yellow Run Coal Company → Caleb Mine; 1981-04-01 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Davis T Raymond → Yellow Run Coal Company; 1981-04-01 to 1987-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Hardhat Mining Inc → Caleb Mine; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William D  Renton et al → Caleb Mine; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D  Renton et al → Hardhat Mining Inc; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James T  Arnone et al → Hardhat Mining Inc; 1987-04-01 to current/open; source msha-controller-operator-history